Java本机方法源代码

Java本机方法源代码

您可以在此处下载OpenJdk源代码。

在该文件夹中，

jdksrcshare

您可以获取源代码。

jdksrcsharenative

是使用c和c ++编写的natice方法。

1. jdksrclinux

   Linux的源代码。

2. jdksrcwindows

   Windows的源。

3. jdksrcsolaris

   索拉里斯的来源。

4. jdsrcshare

   共同来源。

例如：System.arrayCopy（）;

int文件

hotspotsrcsharevmoopsobjArrayKlass.cpp

行168：

void objArrayKlass::copy_array(arrayOop s, int src_pos, arrayOop d,     int dst_pos, int length, TRAPS) {assert(s->is_objArray(), "must be obj array");if (!d->is_objArray()) {  THROW(vmSymbols::java_lang_ArrayStoreException());}// Check is all offsets and lengths are non negativeif (src_pos < 0 || dst_pos < 0 || length < 0) {  THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());}// Check if the ranges are validif  ( (((unsigned int) length + (unsigned int) src_pos) > (unsigned int) s->length())   || (((unsigned int) length + (unsigned int) dst_pos) > (unsigned int) d->length()) )   {  THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());}// Special case. Boundary cases must be checked first// This allows the following call: copy_array(s, s.length(), d.length(), 0).// This is correct, since the position is supposed to be an 'in between point', i.e., s.length(),// points to the right of the last element.if (length==0) {  return;}if (UseCompressedOops) {  narrowOop* const src = objArrayOop(s)->obj_at_addr<narrowOop>(src_pos);  narrowOop* const dst = objArrayOop(d)->obj_at_addr<narrowOop>(dst_pos);  do_copy<narrowOop>(s, src, d, dst, length, CHECK);} else {  oop* const src = objArrayOop(s)->obj_at_addr<oop>(src_pos);  oop* const dst = objArrayOop(d)->obj_at_addr<oop>(dst_pos);  do_copy<oop> (s, src, d, dst, length, CHECK);  }}